Grandstream-networks GSM gateway Manuel d'utilisateur télécharger pdf (Page 31)

Februaray-2006 Page 31 / 42 MasterVoIP VoIP to GSM Gateway

3.4 VoIP Master

3.4.1 What is the VoIP Master and how it works

This device connects GSM cellular telephones to the internet, by way of VoIP (Voice over Internet Protocol). A GSM module,

including a SIM card, is installed inside the VoIP device. A SIM card is a smart card that is received with a subscription to a

cellular telephone network. This following is the communication solution architecture enabled by the VoIPMaster:

One Location in the

World

Another Location in the

World

IP Network

VoIP

Near 0 Cost!

GSM

Base Stations

GSM

Cellphones

GSM

Cellphones

VoIPMaster

Management

VoIP

Master

VoIP

Master

GSM

Cellphones

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Grandstream-networks GSM gateway Manuel d'utilisateur Page 31